On Mon, May 10, 1999 at 12:05:31AM -0400, W. Michael Petullo wrote:
> Mounting a filesystem image with `mount -t ext2 -o loop=/dev/loop1 foo
> bar` works fine -- the first time.  Unmounting it also works.  However
> once I have executed the above mount/unmount commands, any successive
> mount using /dev/loop1 fails with: "ioctl: LOOP_SET_FD: Device or resource
> busy."

We've had this before.. you've got /etc/mtab as a symlink to /proc/mounts,
haven't you?

When mount is used to create a loop device, it attempts to record the
fact that it has done so in /etc/mtab so it knows to delete it on umount.
If /etc/mtab is a symlink to /proc/mounts then this is not possible.
You must therefore use losetup to delete the mount yourself.

-- 
Matthew Wilcox <willy@bofh.ai>
"Windows and MacOS are products, contrived by engineers in the service of
specific companies. Unix, by contrast, is not so much a product as it is a
painstakingly compiled oral history of the hacker subculture." - N Stephenson

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